Sesquiterpene lactones. New lactones from Hymenoclea salsola T. and G.

Abstract

Further examination of Hymenoclea salsola T. and G., from which four pseudoguaianolides and ilicic acid were previously isolated, has yielded three new compounds of the same class. These are hymenin (1-epiparthenin), hymenolin (11,13-dihydroparthenin), and salsolin (apoludin-2-acetate).